END-TO-END DOUBLE-RATCHET ENCRYPTION WITH EPOCH KEY EXCHANGE - Patent 3921971

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EP 3 921 971 A1

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(43)	Date of publication:
	15.12.2021 Bulletin 2021/50

(21)	Application number: 19773618.4

(22)	Date of filing: 09.09.2019

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International Patent Classification (IPC):

H04L 9/08^(2006.01)

(52)	Cooperative Patent Classification (CPC):
	H04L 63/0442; H04L 63/061; H04L 9/0841; H04L 63/045; H04L 9/0869; H04L 9/0891; H04L 2463/061

(86)	International application number:
	PCT/US2019/050139

(87)	International publication number:
	WO 2020/162982 (13.08.2020 Gazette 2020/33)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
	Designated Extension States:
	BA ME
	Designated Validation States:
	KH MA MD TN

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Priority:

05.02.2019 US 201916267819

(71)	Applicant: Qrypt, Inc.
	New York, NY 10007 (US)

(72)	Inventors:
	MANDICH, Denis New York, NY 10007 (US) DODIS, Yevgeniy New York, NY 10007 (US)

(74)	Representative: Mewburn Ellis LLP
	Aurora Building Counterslip Bristol BS1 6BX Bristol BS1 6BX (GB)

(54)	END-TO-END DOUBLE-RATCHET ENCRYPTION WITH EPOCH KEY EXCHANGE